$(document).ready(function() {

    //nav
    $("#mnavh").click(function() {
        $("#starlist").toggle();
        $("#mnavh").toggleClass("open");
    });

    // var obj = null;
    // var As = document.getElementById('starlist').getElementsByTagName('a');
    // obj = As[0];
    // for (i = 1; i < As.length; i++) {
    //     if (window.location.href.indexOf(As[i].href) >= 0)
    //         obj = As[i];
    // }
    // obj.id = 'selected';

    var new_scroll_position = 0;
    var last_scroll_position;
    var header = document.getElementById("header");

    window.addEventListener('scroll', function(e) {
        last_scroll_position = window.scrollY;

        // Scrolling down
        if (new_scroll_position < last_scroll_position && last_scroll_position > 80) {
            // header.removeClass('slideDown').addClass('slideUp');
            header.classList.remove("slideDown");
            header.classList.add("slideUp");

            // Scrolling up
        } else if (new_scroll_position > last_scroll_position) {
            // header.removeClass('slideUp').addClass('slideDown');
            header.classList.remove("slideUp");
            header.classList.add("slideDown");
        }

        new_scroll_position = last_scroll_position;
    });

    //�ص�����
    // browser window scroll (in pixels) after which the "back to top" link is shown
    var offset = 300
      , //browser window scroll (in pixels) after which the "back to top" link opacity is reduced
    offset_opacity = 1200
      , //duration of the top scrolling animation (in ms)
    scroll_top_duration = 700
      , //grab the "back to top" link
    $back_to_top = $('.cd-top');

    //hide or show the "back to top" link
    $(window).scroll(function() {
        ($(this).scrollTop() > offset) ? $back_to_top.addClass('cd-is-visible') : $back_to_top.removeClass('cd-is-visible cd-fade-out');
        if ($(this).scrollTop() > offset_opacity) {
            $back_to_top.addClass('cd-fade-out');
        }
    });
    //smooth scroll to top
    $back_to_top.on('click', function(event) {
        event.preventDefault();
        $('body,html').animate({
            scrollTop: 0,
        }, scroll_top_duration);
    });
    
    //info
    var Sticky = new hcSticky('#info_aside',{
        stickTo: 'main',
        innerTop: 310,
        followScroll: false,
        queries: {
            480: {
                disable: true,
                stickTo: 'body'
            }
        }
    });

});
